Yes, I use Silo for modeling and UVs, and then use Hex for assigning materials and cutting the mesh up for Poser. Both apps have little workflow quirks that make me prefer one or the other for different things. I got Hex for cheap when it was on sale at DAZ, and boy am I glad. It's so unstable on my system I'd have been mad if I'd paid full price. But I love the color scheme in Hex, that's why my Silo interface is the color it is.